Table 4.

Correlations of radiological parameters of lung involvement and clinical parameters on admission

Variable	Spearman Rank Order Correlations All correlations are significant at p < 0.05
	Respiratory rate, /min	Oxygen saturation, %	CRP, mg/l	IL6, pg/ml	IG, 10^3/µl	WBC, 10^3/µl	Neutrophil count, 10^3/µl	Lymphocyte count, 10^3/µl	Ferritin, µg/l	LDH, U/l	NIH score, 0–4
AIV, cm3	0.23	-0.50	0.48	0.21	0.45	0.24	0.33	-0.24	0.45	0.64	0.46
AGV, cm3	0.21	-0.49	0.46	0.19	0.43	0.23	0.31	-0.23	0.46	0.63	0.44
ACV, cm3	0.24	-0.47	0.43	0.23	0.39	0.22	0.30	-0.23	0.31	0.52	0.42
PIV, %	0.24	-0.53	0.46	0.21	0.44	0.25	0.33	-0.24	0.36	0.64	0.48
PGV, %	0.23	-0.52	0.45	0.20	0.44	0.25	0.33	-0.24	0.39	0.65	0.47
PCV, %	0.23	-0.47	0.39	0.22	0.37	0.21	0.28	-0.21	0.22	0.48	0.41

AIV - absolute inflammation volume, AGV - absolute ground glass volume, ACV - absolute consolidation volume, PIV - percentage of inflammation volume, PGV - percentage of ground glass volume, PCV - percentage of consolidation volume, CRP - C-reactive protein, IL6 - interleukin 6, IG - immature granulocytes, WBC – white blood cells, LDH – lactate dehydrogenase, NIH score – National Institute of Health severity score